Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.51≤f1/f≤2.50, 1.70≤n2≤2.20, −2.00≤f3/f4≤2.00, −10.00≤(R13+R14)/(R13−R14)≤10.00 and 1.70≤n5≤2.20, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; n2 denotes a refractive index of the second lens; n5 denotes a refractive index of the fifth lens; R13 denotes a curvature radius of an object-side surface of the seventh lens; and R14 denotes a curvature radius of an image-side surface of the seventh lens.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, inparticular, to a camera optical lens suitable for handheld devices, suchas smart phones and digital cameras, and imaging devices, such asmonitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes seven lenses. Specifically, the camera optical lens 10includes, from an object side to an image side: an aperture S1, a firstlens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifthlens L5, a sixth lens L6 and a seventh lens L7. An optical element suchas an optical filter GF can be arranged between the seventh lens L7 andan image surface Si.

The first lens L1, the third lens L3, the fourth lens L4, the sixth lensL6 and the seventh lens L7 are all made of plastic material. The secondlens L2 and the fifth lens L5 are all made of glass material.

Here, a focal length of the camera optical lens 10 is defined as f, afocal length of the first lens L1 is defined as f1, and the cameraoptical lens 10 should satisfy a condition of 1.51≤f1/f≤2.50, whichspecifies a positive refractive power of the first lens L1. A valuelower than a lower limit may facilitate a development towards ultra-thinlenses, but the positive refractive power of the first lens L1 may betoo powerful to correct such a problem as aberration, which isunbeneficial for a development towards wide-angle lenses. On thecontrary, a value higher than an upper limit may weaken the positiverefractive power of the first lens L1, and it will be difficult torealize the development towards ultra-thin lenses. Preferably, thecamera optical lens 10 further satisfies a condition of 1.52≤f1/f≤2.46.

A refractive index of the second lens L2 is defined as n2, and thecamera optical lens 10 should satisfy a condition of 1.70≤n2≤2.20, whichspecifies the refractive index of the second lens L2. Within this range,it facilitates the development towards ultra-thin lenses and correctionof the aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 1.71≤n2≤2.04.

A focal length of the third lens L3 is defined as f3, a focal length ofthe fourth lens L4 is defined as f4, and the camera optical lens 10should satisfy a condition of −2.00≤f3/f4≤2.00, which specifies a ratioof the focal length f3 of the third lens L3 and the focal length f4 ofthe fourth lens L4. This can effectively reduce a sensitivity of thecamera optical lens and further enhance an imaging quality. Preferably,the camera optical lens 10 further satisfies a condition of−1.93≤f3/f4≤1.89.

A curvature radius of an object-side surface of the seventh lens L7 isdefined as R13, a curvature radius of an image-side surface of theseventh lens L7 is defined as R14, and the camera optical lens 10further satisfies a condition of −10.00≤(R13+R14)/(R13-R14)≤10.00, whichspecifies a shape of the seventh lens L7. Within this range, adevelopment towards ultra-thin and wide-angle lens would facilitatecorrecting a problem like an off-axis aberration. Preferably, the cameraoptical lens 10 further satisfies a condition of−9.52≤(R13+R14)/(R13-R14)≤9.57.

A refractive index of the fifth lens L5 is defined as n5, and the cameraoptical lens 10 should satisfy a condition of 1.70≤n5≤2.20, whichspecifies the refractive index of the fifth lens L5. Within this range,it facilitates the development towards ultra-thin lenses and thecorrection of the aberration. Preferably, the camera optical lens 10further satisfies a condition of 1.71≤n5≤2.08.

A total optical length from an object-side surface of the first lens L1to the image surface Si of the camera optical lens along an optical axisis defined as TTL.

When a focal length f of the camera optical lens 10, the focal length f1of the first lens L1, the focal length f3 of the third lens L3, thefocal length f4 of the fourth lens L4, the refractive index n2 of thesecond lens L2, the refractive index n5 of the fifth lens L5, thecurvature radius R13 of the object-side surface of the seventh lens L7,and the curvature radius R14 of the image-side surface of the seventhlens L7 all satisfy the above conditions, the camera optical lens 10 hasan advantage of high performance and satisfies a design requirement oflow TTL.

In an embodiment, the object-side surface of the first lens L1 is convexin a paraxial region, an image-side surface of the first lens L1 isconcave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object-side surface of the first lens L1 isdefined as R1, a curvature radius of the image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of −14.80≤(R1+R2)/(R1−R2)≤−1.67. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, the camera optical lens 10 furthersatisfies a condition of −9.25≤(R1+R2)/(R1−R2)≤−2.09.

An on-axis thickness of the first lens L1 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.03≤d1/TTL≤0.19. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d1/TTL≤0.16.

In an embodiment, an object-side surface of the second lens L2 is convexin the paraxial region, an image-side surface of the second lens L2 isconcave in the paraxial region, and the second lens L2 has a positiverefractive power.

The focal length of the camera optical lens 10 is defined as f, thefocal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of 0.59≤f2/f≤31.42. Bycontrolling a positive refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of 0.95≤f2/f≤25.13.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −41.88≤(R3+R4)/(R3−R4)≤−0.97, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof an on-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −26.18≤(R3+R4)/(R3−R4)≤−1.21.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.03≤d3/TTL≤0.12. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d3/TTL≤0.10.

In an embodiment, an object-side surface of the third lens L3 is concavein the paraxial region, an image-side surface of the third lens L3 isconvex in the paraxial region, and the third lens L3 has a refractivepower.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −4.80≤f3/f≤15.71. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −3.00≤f3/f≤12.57.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of −66.68≤(R5+R6)/(R5−R6)≤−1.79. This caneffectively control a shape of the third lens L3, thereby facilitatingshaping of the third lens and avoiding bad shaping and generation ofstress due to an the overly large surface curvature of the third lensL3. Preferably, the camera optical lens 10 further satisfies a conditionof −41.68≤(R5+R6)/(R5−R6)≤−2.24.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.02≤d5/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d5/TTL≤0.07.

In an embodiment, an object-side surface of the fourth lens L4 is convexin the paraxial region, and the fourth lens L4 has a positive refractivepower.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of 0.65≤f4/f≤8.80. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and the lower sensitivity.Preferably, the camera optical lens 10 further satisfies a condition of1.04≤f4/f≤7.04.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of an image-side surface of the fourthlens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of −24.30≤(R7+R8)/(R7−R8)≤−0.30, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of −15.19≤(R7+R8)/(R7−R8)≤−0.37.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.13. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.06≤d7/TTL≤0.10.

In an embodiment, the fifth lens L5 has a refractive power.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of −5.55≤f5/f≤54.17, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.47≤f5/f≤43.34.

A curvature radius of an object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of an image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of −22.15≤(R9+R10)/(R9−R10)≤2.89, which specifiesa shape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −13.85≤(R9+R10)/(R9−R10)≤2.31.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.02≤d9/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d9/TTL≤0.07.

In an embodiment, an object-side surface of the sixth lens L6 is convexin the paraxial region, an image-side surface of the sixth lens L6 isconcave in the paraxial region, and the sixth lens L6 has a positiverefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of 0.98≤f6/f≤11.85. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of1.57≤f6/f≤9.48.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of −10.19≤(R11+R12)/(R11-R12)≤−2.13, whichspecifies a shape of the sixth lens L6. Within this range, a developmenttowards ultra-thin and wide-angle lenses would facilitate correcting theproblem of the off-axis aberration. Preferably, the camera optical lens10 further satisfies a condition of −6.37≤(R11+R12)/(R11-R12)≤−2.67.

An on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.02≤d11/TTL≤0.14. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d11/TTL≤0.11.

In an embodiment, the seventh lens L7 has a negative refractive power.

A focal length of the seventh lens L7 is defined as f7, and the cameraoptical lens 10 further satisfies a condition of −42.52≤f7/f≤−0.55. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of−26.57≤f7/f≤−0.69.

An on-axis thickness of the seventh lens L7 is defined as d13, and thecamera optical lens 10 further satisfies a condition of0.02≤d13/TTL≤0.26. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d13/TTL≤0.21.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.50 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 5.25 mm.

In an embodiment, an F number of the camera optical lens 10 is less thanor equal to 2.52. The camera optical lens has a large aperture and abetter imaging performance. Preferably, the F number of the cameraoptical lens 10 is less than or equal to 2.47.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens to the image surface of the camera opticallens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd νd S1 ∞ d0= −0.220 R1 1.985 d1= 0.407 nd1 1.5445 ν1 55.99R2 4.625 d2= 0.215 R3 6.374 d3= 0.268 nd2 1.7130 ν2 53.87 R4 7.013 d4=0.300 R5 −1.791 d5= 0.220 nd3 1.6713 ν3 19.24 R6 −2.600 d6= 0.020 R73.851 d7= 0.434 nd4 1.5445 ν4 55.99 R8 −10.047 d8= 0.851 R9 17.614 d9=0.307 nd5 1.7130 ν5 53.87 R10 21.110 d10= 0.077 R11 2.119 d11= 0.245 nd61.5445 ν6 55.99 R12 4.045 d12= 0.519 R13 −6.727 d13= 0.250 nd7 1.5352 ν756.12 R14 2.441 d14= 0.580 R15 ∞ d15= 0.210 ndg 1.5163 νg 64.15 R16 ∞d16= 0.100

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of the object-side surface of the sixth lens L6;

R12: curvature radius of the image-side surface of the sixth lens L6;

R13: curvature radius of the object-side surface of the seventh lens L7;

R14: curvature radius of the image-side surface of the seventh lens L7;

R15: curvature radius of an object-side surface of the optical filterGF;

R16: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lens;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the seventh lens L7;

d13: on-axis thickness of the seventh lens L7;

d14: on-axis distance from the image-side surface of the seventh lens L7to the object-side surface of the optical filter GF;

d15: on-axis thickness of the optical filter GF;

d16: on-axis distance from the image-side surface to the image surfaceof the optical filter GF;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

nd7: refractive index of the d line of the seventh lens L7;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 1.5076E−01  2.1188E−02 1.1594E−02  1.4071E−02  2.1592E−02−3.1973E−02  4.3395E−02 −2.6686E−02 R2 1.0844E+01  1.7951E−02 2.5061E−02 4.0086E−02 −2.6256E−02  5.5204E−02 −3.7377E−02 −6.4342E−02 R34.0740E+01 −1.0085E−01 3.3297E−02  2.5966E−02 −1.5695E−01  2.0942E−01−1.6384E−01 −1.8022E−02 R4 −2.1490E+02  −7.2547E−02 −9.9952E−02  2.0616E−01 −4.2091E−01  5.8019E−01 −4.6436E−01  1.0207E−01 R5−3.5530E−02  −9.1982E−02 −5.2402E−02   1.2006E−01 −8.2991E−02−4.3250E−02  7.5895E−02 −1.0999E−01 R6 −1.0150E−01  −6.0706E−025.6762E−02 −1.8422E−02  5.9540E−02 −1.7480E−01  1.3658E−01 −3.4905E−02R7 8.9597E+00 −1.0319E−01 1.3827E−01 −1.6206E−01  1.0102E−01 −4.9784E−02 2.7675E−02 −8.6747E−03 R8 0.0000E+00 −6.6069E−02 4.6156E−02 −1.1709E−02−4.0773E−03  1.4267E−02 −1.2554E−02  6.2453E−03 R9 −1.6714E+01 −7.7773E−02 1.4704E−02 −3.2469E−02  2.4944E−02 −1.0603E−02  2.8872E−03−4.0720E−04 R10 1.0086E+02 −1.7860E−01 9.7798E−02 −4.2487E−02 1.1101E−02 −5.1388E−04 −1.9602E−04 −6.1356E−06 R11 −5.7085E+00 −8.6298E−02 −7.1956E−02   5.4716E−02 −4.4947E−03 −1.2332E−02  5.1518E−03−5.8511E−04 R12 2.8491E+00  5.4023E−02 −2.2302E−01   1.8424E−01−8.4398E−02  2.1927E−02 −2.9831E−03  1.6263E−04 R13 8.1624E+00−2.4823E−01 1.5881E−01 −3.9101E−02  1.6522E−03  1.1940E−03 −2.4263E−04 1.4511E−05 R14 −1.0726E+01  −1.7595E−01 1.1673E−01 −4.8365E−02 1.2238E−02 −1.8659E−03  1.5887E−04 −6.0081E−06

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6, and P7R1 and P7R2 represent theobject-side surface and the image-side surface of the seventh lens L7.The data in the column named “inflexion point position” refer tovertical distances from inflexion points arranged on each lens surfaceto the optic axis of the camera optical lens 10. The data in the columnnamed “arrest point position” refer to vertical distances from arrestpoints arranged on each lens surface to the optical axis of the cameraoptical lens 10.

TABLE 3 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 P1R2 1 0.855 P2R1 1 0.485 P2R2 1 0.295 P3R10 P3R2 0 P4R1 0 P4R2 1 0.905 P5R1 1 0.255 P5R2 1 0.155 P6R1 2 0.4951.575 P6R2 2 0.615 1.935 P7R1 2 1.165 1.735 P7R2 1 0.425

TABLE 4 Number(s) of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 1 0.785 P2R2 1 0.505 P3R1 0 P3R2 0 P4R1 0 P4R2 0 P5R1 1 0.435 P5R21 0.265 P6R1 1 0.865 P6R2 1 1.025 P7R1 0 P7R2 1 0.895

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470 nm, 555 nm and 650 nm after passing thecamera optical lens 10 according to Embodiment 1, respectively. FIG. 4illustrates a field curvature and a distortion with a wavelength of 555nm after passing the camera optical lens 10 according to Embodiment 1. Afield curvature S in FIG. 4 is a field curvature in a sagittaldirection, and T is a field curvature in a tangential direction.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 1.966 mm, an image height of 1.0H is 2.934 mm, a FOV (field ofview) in a diagonal direction is 72.42°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis aberrationsare fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.100 R1 1.864 d1= 0.600 nd1 1.5445 ν1 55.99R2 3.268 d2= 0.053 R3 3.038 d3= 0.283 nd2 1.8052 ν2 25.43 R4 16.611 d4=0.239 R5 −1.207 d5= 0.210 nd3 1.6713 ν3 19.24 R6 −2.638 d6= 0.025 R73.780 d7= 0.355 nd4 1.5445 ν4 55.99 R8 −11.327 d8= 0.168 R9 −3.043 d9=0.234 nd5 1.7550 ν5 52.32 R10 −5.266 d10= 0.030 R11 2.132 d11= 0.424 nd61.5445 ν6 55.99 R12 3.173 d12= 0.255 R13 1.413 d13= 0.485 nd7 1.5352 ν756.12 R14 1.135 d14= 0.967 R15 ∞ d15= 0.210 ndg 1.5163 νg 64.15 R16 ∞d16= 0.100

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 −7.4510E+00   8.8636E−02  9.9238E−02 −8.9704E−011.9336E+00 −2.0187E+00   4.8648E−01 3.5248E−01 R2 3.3704E+00  5.7557E−03−1.8229E+00  4.3942E+00 −9.2465E+00  1.4909E+01 −8.6857E+00 −1.3186E+00 R3 1.0672E+00  5.3012E−02 −1.1215E+00  1.8164E+00 −5.3416E+00 1.3635E+01 −8.7215E+00 −2.7535E+00  R4 0.0000E+00 −5.4343E−02−1.3211E−01 −1.0378E+00 6.7789E−01 3.1823E+00 −1.5972E+00 −3.2107E+00 R5 −3.4450E−03   1.0355E−02 −3.6404E−01  1.4342E+00 −5.2393E+00 6.6969E+00  5.5172E+00 −1.3010E+01  R6 2.0812E+00 −2.5217E−02 8.0354E−02  2.6640E−03 1.1764E−01 −4.1488E−02  −2.0610E−01 1.4006E−01R7 8.0106E+00 −9.9780E−02  1.4463E−01 −1.6738E−01 9.4458E−02−5.2586E−02   6.8827E−03 6.3847E−03 R8 0.0000E+00 −5.8129E−02 5.0164E−02 −9.4902E−03 3.8451E−03 1.2270E−02 −4.5547E−03 1.0078E−03 R9−2.0948E+00  −2.3864E−02 −1.7495E−03 −9.2784E−04 3.2962E−02 −2.5795E−03  1.3262E−03 −3.4733E−03  R10 −1.1470E+01  −1.8642E−01  1.3978E−01−4.1057E−02 1.2833E−02 2.0410E−04  1.9905E−04 7.4834E−05 R11 1.3911E+00−2.4086E−01 −4.9190E−02  0.0000E+00 1.3489E−02 −3.6200E−03   5.2526E−047.4800E−04 R12 1.9201E+00  2.7515E−02 −2.1728E−01  1.8513E−01−8.4038E−02  2.1918E−02 −3.0125E−03 1.4962E−04 R13 −3.3624E+00 −2.7510E−01  1.5295E−01 −3.8859E−02 1.8345E−03 1.2251E−03 −2.4647E−041.3785E−05 R14 −2.9426E+00  −2.0927E−01  1.2268E−01 −4.8059E−021.2096E−02 −1.8816E−03   1.6031E−04 −5.5392E−06 

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.675 P1R2 1 0.315 P2R1 2 0.365 0.615 P2R21 0.245 P3R1 0 P3R2 1 0.685 P4R1 1 0.785 P4R2 1 0.755 P5R1 1 0.825 P5R21 0.885 P6R1 2 0.425 1.155 P6R2 1 0.615 P7R1 1 0.465 P7R2 1 0.565

TABLE 8 Number of Arrest point arrest points position 1 P1R1 0 P1R2 10.485 P2R1 0 P2R2 1 0.365 P3R1 0 P3R2 0 P4R1 0 P4R2 1 0.965 P5R1 1 1.085P5R2 1 1.155 P6R1 1 0.705 P6R2 1 1.095 P7R1 1 1.045 P7R2 1 1.355

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 555 nm and 650 nm nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.561 mm, an image height of 1.0H is 2.934 mm, a FOV (field of view)in the diagonal direction is 77.46°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.050 R1 1.444 d1= 0.300 nd1 1.5445 ν1 55.99R2 1.896 d2= 0.100 R3 3.004 d3= 0.371 nd2 1.8830 ν2 40.77 R4 12.106 d4=0.239 R5 −1.030 d5= 0.263 nd3 1.6713 ν3 19.24 R6 −1.094 d6= 0.030 R72.370 d7= 0.367 nd4 1.5445 ν4 55.99 R8 2.795 d8= 0.183 R9 11.642 d9=0.215 nd5 1.9591 ν5 17.47 R10 3.685 d10= 0.176 R11 7.126 d11= 0.220 nd61.5445 ν6 55.99 R12 12.657 d12= 0.502 R13 −7.159 d13= 0.793 nd7 1.5352ν7 56.12 R14 −8.940 d14= 0.502 R15 ∞ d15= 0.210 ndg 1.5163 νg 64.15 R16∞ d16= 0.100

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  4.9927E−01 −1.2422E−01 −1.3640E−01 2.3375E−01−7.4106E−01  −2.8073E+00 1.0236E+01 −8.1589E+00 R2 −1.1633E+00−1.5567E−01 −3.0495E−01 −3.5875E−01  9.2364E−01  2.7011E−01 3.2813E+00−5.2828E+00 R3 −6.8346E+00 −4.4015E−02 −2.1630E−01 4.2349E−02 2.9421E−01 3.8289E−01 1.1647E+00 −2.6189E+00 R4 −1.1304E+02 −1.2924E−01−1.8601E−01 1.5860E−02 9.3866E−02  3.0518E−01 −2.6897E−01  −3.0451E−01R5 −1.5658E+00  8.4832E−02  2.2742E−01 1.3812E−01 −5.0029E−01  2.1738E−01 3.8458E−01 −5.6898E−01 R6 −1.5632E+00  2.2243E−01 2.2092E−01 2.6738E−01 1.0478E−01 −4.6355E−01 −9.9087E−02   4.4139E−01R7 −3.9503E−01 −7.6208E−02 −3.3794E−03 1.5310E−03 2.5126E−03 −2.2643E−021.9355E−02 −2.9924E−03 R8  1.4870E+00 −9.1334E−02 −3.7750E−03−4.7507E−03  −3.9152E−03   2.5866E−03 −1.4941E−03   2.4531E−04 R9−2.5165E+00 −6.6502E−02 −2.4581E−02 1.0310E−02 7.9628E−03 −2.2329E−038.7321E−04 −4.3941E−04 R10 −3.8919E+01 −1.0086E−01  2.2937E−021.5276E−03 −1.7634E−03   2.6919E−04 1.6675E−04  1.2171E−04 R11−1.4223E+02 −1.0160E−01  8.8105E−03 −6.0384E−04  1.2279E−03  9.7414E−04−3.6894E−05  −7.4104E−06 R12 −3.4046E+00 −1.2475E−02  9.2053E−041.1985E−03 9.0805E−05 −4.0245E−05 −3.5995E−06  −1.2335E−06 R13−2.1396E+01 −1.8525E−02  5.8953E−03 −1.3303E−04  −5.6439E−05 −8.4463E−07 6.3529E−07  1.1549E−08 R14  0.0000E+00  8.5401E−04−1.1517E−02 2.4829E−03 −2.4166E−04  −2.4682E−05 5.5741E−06  1.6256E−07

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion Inflexion Inflexion inflexion pointpoint point points position 1 position 2 position 3 P1R1 1 0.555 P1R2 30.395 0.645 0.745 P2R1 3 0.445 0.595 0.735 P2R2 1 0.215 P3R1 1 0.535P3R2 1 0.435 P4R1 1 0.685 P4R2 1 0.605 P5R1 2 0.315 1.115 P5R2 2 0.3851.185 P6R1 2 0.295 1.215 P6R2 0 P7R1 1 1.325 P7R2 1 2.095

TABLE 12 Number of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 0 P2R2 1 0.345 P3R1 0 P3R2 1 0.675 P4R1 0 P4R2 1 0.985 P5R1 1 0.535P5R2 1 0.725 P6R1 1 0.515 P6R2 0 P7R1 1 2.005 P7R2 0

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 555 nm and 650 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 30 accordingto Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.521 mm, an image height of 1.0H is 2.934 mm, a FOV (field of view)in the diagonal direction is 76.02°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.971 3.591 3.727 f1 6.036 6.901 8.990 f2 83.172 4.543 4.420 f3−9.533 −3.489 39.045 f4 5.153 5.237 21.861 f5 143.408 −9.966 −5.640 f67.797 10.401 29.433 f7 −3.304 −27.390 −79.240 f12 5.585 2.946 3.126 FNO2.02 2.30 2.45 f1/f 1.52 1.92 2.41 n2 1.71 1.81 1.88 f3/f4 −1.85 −0.671.79 (R13 + R14)/ 0.47 9.15 −9.04 (R13 − R14) n5 1.71 1.76 1.96

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens; a second lens; a third lens; afourth lens; a fifth lens; a sixth lens; and a seventh lens; wherein thecamera optical lens satisfies following conditions:1.51≤f1/f≤2.50,1.70≤n2≤2.20,−2.00≤f3/f4≤2.00;−10.00≤(R13+R14)/(R13−R14)≤10.00; and1.70≤n5≤2.20; where f denotes a focal length of the camera optical lens;f1 denotes a focal length of the first lens; f3 denotes a focal lengthof the third lens; f4 denotes a focal length of the fourth lens; n2denotes a refractive index of the second lens; n5 denotes a refractiveindex of the fifth lens; R13 denotes a curvature radius of anobject-side surface of the seventh lens; and R14 denotes a curvatureradius of an image-side surface of the seventh lens.
 2. The cameraoptical lens according to claim 1 further satisfying followingconditions: 1.52≤f1/f≤2.46; 1.71≤n2≤2.04; −1.93≤f3/f4≤1.89;−9.52≤(R13+R14)/(R13−R14)≤9.57; and 1.71≤n5≤2.08.
 3. The camera opticallens according to claim 1, wherein the first lens has a positiverefractive power, an object-side surface of the first lens is convex ina paraxial region and an image-side surface of the first lens is concavein the paraxial region; and the camera optical lens further satisfiesfollowing conditions:−14.80≤(R1+R2)/(R1−R2)≤−1.67; and0.03≤d1/TTL≤0.19; where R1 denotes a curvature radius of the object-sidesurface of the first lens; R2 denotes a curvature radius of theimage-side surface of the first lens; d1 denotes an on-axis thickness ofthe first lens; and TTL denotes a total optical length from theobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 4. The camera optical lens accordingto claim 3 further satisfying following conditions:−9.25≤(R1+R2)/(R1−R2)≤−2.09; and0.05≤d1/TTL≤0.16.
 5. The camera optical lens according to claim 1,wherein the second lens has a positive refractive power, an object-sidesurface of the second lens is convex in a paraxial region and animage-side surface of the second lens is concave in the paraxial region;and the camera optical lens further satisfies following conditions:0.59≤f2/f≤31.42;−41.88≤(R3+R4)/(R3−R4)≤−0.97; and0.03≤d3/TTL≤0.12; where f2 denotes a focal length of the second lens; R3denotes a curvature radius of the object-side surface of the secondlens; R4 denotes a curvature radius of the image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 6. The camera optical lens according to claim 5 further satisfyingfollowing conditions:0.95≤f2/f≤25.13;−26.18≤(R3+R4)/(R3−R4)≤−1.21; and0.04≤d3/TTL≤0.10.
 7. The camera optical lens according to claim 1,wherein the third lens has a refractive power, an object-side surface ofthe third lens is concave in a paraxial region and an image-side surfaceof the third lens is convex in the paraxial region, and the cameraoptical lens further satisfies following conditions:−4.80≤f3/f≤15.71;−66.68≤(R5+R6)/(R5−R6)≤−1.79; and0.02≤d5/TTL≤0.09; where R5 denotes a curvature radius of the object-sidesurface of the third lens; R6 denotes a curvature radius of theimage-side surface of the third lens; d5 denotes an on-axis thickness ofthe third lens; and TTL denotes a total optical length from anobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 8. The camera optical lens accordingto claim 7 further satisfying following conditions:−3.00≤f3/f≤12.57;−41.68≤(R5+R6)/(R5−R6)≤−2.24; and0.04≤d5/TTL≤0.07.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a positive refractive power, and anobject-side surface of the fourth lens is convex in a paraxial region,and the camera optical lens further satisfies following conditions:0.65≤f4/f≤8.80;−24.30≤(R7+R8)/(R7−R8)≤−0.30; and0.04≤d7/TTL≤0.13; where R7 denotes a curvature radius of the object-sidesurface of the fourth lens; R8 denotes a curvature radius of animage-side surface of the fourth lens; d7 denotes an on-axis thicknessof the fourth lens; and TTL denotes a total optical length from anobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 10. The camera optical lensaccording to claim 9 further satisfying following conditions:1.04≤f4/f≤7.04;−15.19≤(R7+R8)/(R7−R8)≤−0.37; and0.06≤d7/TTL≤0.10.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a refractive power, and the camera opticallens further satisfies following conditions:−5.55≤f5/f≤54.17;−22.15≤(R9+R10)/(R9−R10)≤2.89; and0.02≤d9/TTL≤0.09; where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of an object-side surface of the fifth lens;R10 denotes a curvature radius of an image-side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from an object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 12.The camera optical lens according to claim 11 further satisfyingfollowing conditions:−3.47≤f5/f≤43.34;−13.85≤(R9+R10)/(R9−R10)≤2.31; and0.04≤d9/TTL≤0.07.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a positive refractive power, an object-sidesurface of the sixth lens is convex in a paraxial region and animage-side surface of the sixth lens is concave in the paraxial region,and the camera optical lens further satisfies following conditions:0.98≤f6/f≤11.85;−10.19≤(R11+R12)/(R11−R12)≤−2.13; and0.02≤d11/TTL≤0.14; where f6 denotes a focal length of the sixth lens;R11 denotes a curvature radius of the object-side surface of the sixthlens; R12 denotes a curvature radius of the image-side surface of thesixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 14. The camera optical lens according to claim 13 furthersatisfying following conditions:1.57≤f6/f≤9.48;−6.37≤(R11+R12)/(R11−R12)≤−2.67; and0.04≤d11/TTL≤0.11.
 15. The camera optical lens according to claim 1,wherein the seventh lens has a negative refractive power, and the cameraoptical lens further satisfies following conditions:−42.52≤f7/f≤−0.55; and0.02≤d13/TTL≤0.26; where f7 denotes a focal length of the seventh lens;d13 denotes an on-axis thickness of the seventh lens; and TTL denotes atotal optical length from an object-side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 16. Thecamera optical lens according to claim 15 further satisfying followingcondition:−26.57≤f7/f≤−0.69; and0.04≤d13/TTL≤0.21.
 17. The camera optical lens according to claim 1,where a total optical length TTL from an object-side surface of thefirst lens to an image surface of the camera optical lens along anoptical axis is less than or equal to 5.50 mm.
 18. The camera opticallens according to claim 17, wherein the total optical length TTL of thecamera optical lens is less than or equal to 5.25 mm.
 19. The cameraoptical lens according to claim 1, wherein an F number of the cameraoptical lens is less than or equal to 2.52.
 20. The camera optical lensaccording to claim 19, wherein the F number of the camera optical lensis less than or equal to 2.47.